Mini_Project (1).py

class ToDoList:
    def __init__(self):
        self.tasks = {}  # Dictionary to store tasks {task_number: (task, status)}

    def add_task(self, task):
        task_number = len(self.tasks) + 1
        self.tasks[task_number] = (task, "Pending")
        print(f"Task '{task}' added successfully.")

    def view_tasks(self):
        if not self.tasks:
            print("No tasks available.")
        else:
            print("\nYour To-Do List:")
            for num, (task, status) in self.tasks.items():
                print(f"{num}. {task} - [{status}]")

    def mark_completed(self):
        if not self.tasks:
            print("No tasks available to mark as completed.")
            return

        # Display tasks before asking for input
        self.view_tasks()
        
        try:
            task_number = int(input("Enter task number to mark as completed: "))
            if task_number in self.tasks:
                task, _ = self.tasks[task_number]
                self.tasks[task_number] = (task, "Completed")
                print(f"Task '{task}' marked as completed.")
            else:
                print("Invalid task number.")
        except ValueError:
            print("Invalid input! Please enter a valid task number.")

    def remove_task(self):
        if not self.tasks:
            print("No tasks available to remove.")
            return

        # Display tasks before asking for input
        self.view_tasks()

        try:
            task_number = int(input("Enter task number to remove: "))
            if task_number in self.tasks:
                task = self.tasks.pop(task_number)
                print(f"Task '{task[0]}' removed.")
                # Reorder task numbers after removal
                self.tasks = {i+1: v for i, v in enumerate(self.tasks.values())}
            else:
                print("Invalid task number.")
        except ValueError:
            print("Invalid input! Please enter a valid task number.")

# Main Program
def main():
    todo = ToDoList()
    
    while True:
        print("\nTO-DO LIST MENU")
        print("1. Add Task")
        print("2. View Tasks")
        print("3. Mark Task as Completed")
        print("4. Remove Task")
        print("5. Exit")
        
        try:
            choice = int(input("Enter your choice: "))
            
            if choice == 1:
                task = input("Enter the task: ")
                todo.add_task(task)
            elif choice == 2:
                todo.view_tasks()
            elif choice == 3:
                todo.mark_completed()
            elif choice == 4:
                todo.remove_task()
            elif choice == 5:
                print("Exiting To-Do List. Have a productive day!")
                break
            else:
                print("Invalid choice! Please enter a number between 1 and 5.")

        except ValueError:
            print("Invalid input! Please enter a number.")

# Run the program
if __name__ == "__main__":
    main()